From 0f63c3d39c51d2749bd13c54e68bd48cc04fa300 Mon Sep 17 00:00:00 2001
From: "cmiller@zippy.(none)" <>
Date: Tue, 2 May 2006 13:42:35 -0400
Subject: [PATCH] An update to as-yet unused new feature of snprintf, which was
 added to bring our sprintf()-alike in sync with our fprintf()-alike features.

---
 strings/my_vsnprintf.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/strings/my_vsnprintf.c b/strings/my_vsnprintf.c
index d917e9e11b2..e4302f50c58 100644
--- a/strings/my_vsnprintf.c
+++ b/strings/my_vsnprintf.c
@@ -99,7 +99,11 @@ int my_vsnprintf(char *to, size_t n, const char* fmt, va_list ap)
     else if (*fmt == 'b')				/* Buffer parameter */
     {
       char *par = va_arg(ap, char *);
-      to=memmove(to, par, abs(width));
+      DBUG_ASSERT(to <= end);
+      if (to + abs(width) + 1 > end)
+        width= end - to - 1;  /* sign doesn't matter */
+      memmove(to, par, abs(width));
+      to+= width;
       continue;
     }
     else if (*fmt == 'd' || *fmt == 'u'|| *fmt== 'x')	/* Integer parameter */